AR247372A1 - Process for purifying the effluent from urea production plants - Google Patents

Process for purifying the effluent from urea production plants

Info

Publication number
AR247372A1
AR247372A1 AR90317876A AR31787690A AR247372A1 AR 247372 A1 AR247372 A1 AR 247372A1 AR 90317876 A AR90317876 A AR 90317876A AR 31787690 A AR31787690 A AR 31787690A AR 247372 A1 AR247372 A1 AR 247372A1
Authority
AR
Argentina
Prior art keywords
urea
stage
water
steam
production
Prior art date
Application number
AR90317876A
Other languages
Spanish (es)
Original Assignee
Snam Progetti
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11186227&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AR247372(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Snam Progetti filed Critical Snam Progetti
Application granted granted Critical
Publication of AR247372A1 publication Critical patent/AR247372A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/586—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing ammoniacal nitrogen
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/025—Thermal hydrolysis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S210/00—Liquid purification or separation
    • Y10S210/902—Materials removed
    • Y10S210/903—Nitrogenous

Landscapes

  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Physical Water Treatments (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Fertilizers (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

PROCEDIMIENTO DE PURIFICACION EXTREMA DEL AGUA DE REFLUJO PRODUCIDA EN LAS INSTALACIONES PARA LA PRODUCCION DE UREA, QUE CONTIENEN COMO CONTAMINANTES AMONIACO, ANHIDRIDO CARBONICO Y UREA, ESTA PURIFICACION SE REALIZA POR HIDROLISIS Y EXHAUSTACION, PARA OBTENER AGUA TRATADA CON UN CONTENIDO DE AMONIACO Y UREA DE 10 A 0,4PPM, ESA PURIFICACION SE REALIZA EN TRES ETAPAS SUCESIVAS, UNA PRIMERA ETAPA DE EXHAUSTACION (STRIPPING) CON VAPOR DEL AGUA QUE SE VA A TRATAR, PARA LIBERAR LOS COMPONENTES CONTAMINANTES VOLATILES Y RECICLANDOLOS A LA INSTALACION DE PRODUCCION DE UREA EN FASE LIQUIDA O DE VAPOR; UNA SEGUNDA ETAPA DE HIDROLISIS DEL AGUA OBTENIDA EN LA ETAPA PRECEDENTE, PARA DESCOMPONER LOS COMPONENTES NO VOLATILES ESTO ES UREA Y BIURETO, ESTA DESCOMPOSICION SE REALIZA A 20-40 ATMOSFERAS RELATIVAS, A 200 240*C Y CON TIEMPOS DE PERMANENCIA DE 20-40 MINUTOS, EN ZONAS SUCESIVAS RECORRIDAS CON UN FLUJO DE EMBOLO, EN CADA UNA DE LAS CUALES SE LIBERA UNA FASE DE VAPOR EN QUE SE REUNE A LOSÑ VAPORES OBTENIDOS EN LAS ETAPAS DE EXHAUSTACION QUE DESPUES SE RECICLAN A LA PRODUCCION DE UREA; LA TERCERA ETAPA EN LA CUAL EL AGUA SOMETIDA A LA HIDROLISIS SE EXHAUSTA ULTERIORMENTE CON VAPOR, LAS ETAPAS DE EXHAUSTACION SE CONDUCEN A PRESIONES DE 1,5 - 4 ATM. RELATIVOS Y TEMPERATURA DE 128- 150*C.EXTREME PURIFICATION PROCEDURE OF THE REFLUX WATER PRODUCED IN THE FACILITIES FOR THE PRODUCTION OF UREA, WHICH CONTAIN AS AMMONIA, CARBONIC ANHYDRIDE AND UREA CONTAMINANTS. 10 TO 0.4PPM, THAT PURIFICATION IS PERFORMED IN THREE SUCCESSIVE STAGES, A FIRST STAGE OF STRIPPING WITH THE VAPOR OF THE WATER TO BE TREATED, TO RELEASE THE VOLATILE CONTAMINANT COMPONENTS AND RECYCLING THEM IN THE PRODUCTION FACILITY IN U LIQUID OR STEAM; A SECOND STAGE OF WATER HYDROLYSIS OBTAINED IN THE PREVIOUS STAGE, TO DECOMPOSE THE NON-VOLATILE COMPONENTS THIS IS UREA AND BIURETO, THIS DECOMPOSITION IS PERFORMED AT 20-40 RELATED ATMOSPHERES, AT 200 240 * C AND WITH PERMANENT TIME OF 20-40 , IN SUCCESSIVE AREAS TRAVELED WITH A STREAM FLOW, IN EACH ONE OF WHICH A STEAM PHASE IS RELEASED IN WHICH THE STEAMS OBTAINED IN THE EXHAUST STAGES THAT ARE RECYCLED IN THE PRODUCTION OF UREA ARE RELEASED; THE THIRD STAGE IN WHICH WATER SUBJECTED TO HYDROLYSIS IS LAST EXHAUSTED WITH STEAM, THE EXHAUST STAGES ARE CONDUCTED AT 1.5 - 4 ATM PRESSURES. RELATIVES AND TEMPERATURE OF 128-150 * C.

AR90317876A 1989-09-15 1990-09-14 Process for purifying the effluent from urea production plants AR247372A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8921742A IT1232670B (en) 1989-09-15 1989-09-15 PROCEDURE FOR PURIFICATION OF WASTEWATER PRODUCED BY UREA PRODUCTION PLANTS.

Publications (1)

Publication Number Publication Date
AR247372A1 true AR247372A1 (en) 1994-12-29

Family

ID=11186227

Family Applications (1)

Application Number Title Priority Date Filing Date
AR90317876A AR247372A1 (en) 1989-09-15 1990-09-14 Process for purifying the effluent from urea production plants

Country Status (14)

Country Link
US (1) US5096599A (en)
EP (1) EP0417829B2 (en)
CN (1) CN1075793C (en)
AR (1) AR247372A1 (en)
AT (1) ATE88985T1 (en)
CA (1) CA2023415C (en)
DE (1) DE69001530T3 (en)
DK (1) DK0417829T4 (en)
ES (1) ES2055305T5 (en)
GR (1) GR3021676T3 (en)
IT (1) IT1232670B (en)
MX (1) MX171141B (en)
PL (1) PL166456B1 (en)
RU (1) RU2052390C1 (en)

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5221486A (en) * 1991-04-12 1993-06-22 Battelle Memorial Institute Aqueous phase removal of nitrogen from nitrogen compounds
US5223238A (en) * 1992-01-16 1993-06-29 The M. W. Kellogg Company Method for treating ammonia and urea condensates
US5433868A (en) * 1993-09-09 1995-07-18 Battelle Memorial Institute Sewage treatment method
US5772968A (en) * 1996-07-03 1998-06-30 Sunrise, Inc. Apparatus and method for hydrolyzing keratinaceous material
US6077491A (en) 1997-03-21 2000-06-20 Ec&C Technologies Methods for the production of ammonia from urea and/or biuret, and uses for NOx and/or particulate matter removal
CN1072190C (en) * 1998-08-26 2001-10-03 巴陵石化岳阳石油化工总厂 Treatment method for lithium-containing waste liquid of synthetic alkyl lithium compound
US6093380A (en) * 1998-10-16 2000-07-25 Siirtec Nigi, S.P.A. Method and apparatus for pollution control in exhaust gas streams from fossil fuel burning facilities
US6511644B1 (en) 2000-08-28 2003-01-28 The Chemithon Corporation Method for removing contaminants in reactors
US6761868B2 (en) * 2001-05-16 2004-07-13 The Chemithon Corporation Process for quantitatively converting urea to ammonia on demand
US6716360B2 (en) * 2002-04-16 2004-04-06 Eau-Viron Incorporated Method and apparatus for treating waste streams
DE10229103A1 (en) * 2002-06-25 2004-01-15 Agrolinz Melamin Gmbh Device and method for thermal water treatment
US6887449B2 (en) * 2002-11-21 2005-05-03 The Chemithon Corporation Method of quantitatively producing ammonia from urea
CN100400430C (en) * 2006-05-18 2008-07-09 刘国胜 Energy saving, purifying and recovering process for urea process condensate
US20080053909A1 (en) * 2006-09-06 2008-03-06 Fassbender Alexander G Ammonia recovery process
US20080156726A1 (en) * 2006-09-06 2008-07-03 Fassbender Alexander G Integrating recycle stream ammonia treatment with biological nutrient removal
US20080053913A1 (en) * 2006-09-06 2008-03-06 Fassbender Alexander G Nutrient recovery process
US7736508B2 (en) * 2006-09-18 2010-06-15 Christopher A. Limcaco System and method for biological wastewater treatment and for using the byproduct thereof
US20090148370A1 (en) * 2007-12-06 2009-06-11 Spencer Iii Herbert W Process to produce ammonia from urea
US8048202B2 (en) * 2007-12-12 2011-11-01 Kellogg Brown & Root Llc Method for treatment of process waters using steam
EP2107108A1 (en) * 2008-03-31 2009-10-07 KRÜGER Off-Shore A/S An apparatus and a method for continuous thermal hydrolysis of biological material
WO2010066344A1 (en) * 2008-12-12 2010-06-17 Uhde Gmbh Removal of ammonia nitrogen, ammonium nitrogen and urea nitrogen by oxidation with hypochlorite-containing solutions from exhaust air in plants for producing ammonia and urea
DE102009025135A1 (en) * 2009-06-17 2010-12-23 Emitec Gesellschaft Für Emissionstechnologie Mbh Device for evaporating a urea-water solution
EP2386346A1 (en) 2010-05-11 2011-11-16 Stamicarbon B.V. Process for the reduction of ammonia emissions in a urea manufacturing process
EP2402308A1 (en) * 2010-06-24 2012-01-04 DSM IP Assets B.V. Urea plant
US9586831B2 (en) 2014-06-09 2017-03-07 Wahlco, Inc. Urea to ammonia process
JP6634342B2 (en) * 2016-05-24 2020-01-22 東洋エンジニアリング株式会社 Method and apparatus for treating urea aqueous solution
EP3782979A1 (en) * 2019-08-20 2021-02-24 Yara International ASA Preparation of urea solution and facility to do so
CN112495323B (en) * 2020-11-27 2021-11-09 昱创(天津)化工科技有限公司 For CO2Medium-pressure desorption hydrolysis tower for gas stripping urea production and energy-saving production increasing method

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922222A (en) * 1973-02-20 1975-11-25 Cf Ind Method for treatment of urea crystallizer condensate
IT1068268B (en) * 1976-09-09 1985-03-21 Snam Progetti PROCEDURE FOR THE PRODUCTION OF UREA AND PURIFICATION OF WATERS
US4341640A (en) * 1976-09-27 1982-07-27 Standard Oil Company Urea hydrolysis
US4098579A (en) * 1977-03-03 1978-07-04 Instytut Nawozow Sztucznych Zjednoczenie "Petrochemia" Installation for conducting a synthesis reaction of urea
US4087513A (en) * 1977-08-12 1978-05-02 Olin Corporation Method of hydrolyzing urea contained in waste water streams
US4220635A (en) * 1978-03-20 1980-09-02 Olin Corporation Catalytic method for hydrolyzing urea
NL7903623A (en) * 1979-05-09 1980-11-11 Stamicarbon METHOD FOR PURIFYING UREAUS WASTE WATER AND METHOD FOR PREPARING MELAMINE.
JPS5750954A (en) * 1980-09-12 1982-03-25 Mitsui Toatsu Chem Inc Synthesis of urea
NL8006477A (en) * 1980-11-28 1982-06-16 Unie Van Kunstmestfab Bv METHOD FOR REMOVING UREA, AMMONIA AND CARBON DIOXIDE FROM DILUTED AQUEOUS SOLUTION.
NL8100989A (en) * 1981-02-28 1982-09-16 Unie Van Kunstmestfab Bv METHOD FOR REMOVING UREA, AMMONIA AND CARBON DIOXIDE FROM DILUTED AQUEOUS SOLUTIONS.
US4552979A (en) * 1984-08-27 1985-11-12 James Chemical Engineering Inc. Process for treatment of urea plant process condensate

Also Published As

Publication number Publication date
CA2023415A1 (en) 1991-03-16
GR3021676T3 (en) 1997-02-28
EP0417829A1 (en) 1991-03-20
CN1075793C (en) 2001-12-05
PL166456B1 (en) 1995-05-31
RU2052390C1 (en) 1996-01-20
ES2055305T5 (en) 1996-12-16
DE69001530T2 (en) 1993-10-07
DE69001530T3 (en) 1997-07-10
EP0417829B1 (en) 1993-05-05
MX171141B (en) 1993-10-04
IT8921742A0 (en) 1989-09-15
EP0417829B2 (en) 1996-11-06
IT1232670B (en) 1992-03-02
ES2055305T3 (en) 1994-08-16
DK0417829T4 (en) 1996-11-25
CA2023415C (en) 2002-05-14
DE69001530D1 (en) 1993-06-09
CN1050171A (en) 1991-03-27
ATE88985T1 (en) 1993-05-15
US5096599A (en) 1992-03-17

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